She doesn't actually start questioning her array when she finds herself in an endless white world, one she's only glimpsed once during the worst day of her life. The Gate seems pretty key, and... She's here, without having done human transmutation. 

She looks at the smudged outline of her inner Truth, and looks at the complicated, sinuous web of design on the doors before her, that shifts and tricks the eyes even in the constant even light...

And as the gateway opens - 

As the gateway opens, Ling Yao looks over her shoulder, searching for a presence she could've sworn she felt hovering just behind her shoulder - glances back as dark hands of shadow grab her - 

- The last time she saw this world was as Greed sacrificed themself to tear Father away from her - 

Bellona and Elizabeth Elric were bound eternally together when their souls crossed as El dragged her sister back from the gate. When they touched in this liminal space. 

As Ling Yao looks behind her, she sees a mirror of her own Gate, and a black smudge before a white void, and a smoky black figure standing facing it - Greed -

She curses and lunges, grabbing the hand of that smoky black figure as the arms of whatever lays behind the Gate drag her through. 

Which might have something to do with how she loses control of the array, spinning off into the dark. 

She lands - stumbles - somewhere real. Somewhere that's not that infinite brightness. But it doesn't feel like her own world, nor like what Bellona relayed through El.

It's cold, the ground frozen hard and solid. Sparse scraggly grasses and shrubs cover the ground between rough stands of trees.

The smell of death hangs heavy on the air, and the earth rumbles faintly.

Deep meditative breath, and she reaches out to feel the Dragon's Pulse, to get a mental map of the world around her, and if there's any people nearby...

There are a lot of people nearby! Weirdly-shaped people, some of them with a strange energy inside of them, and underground in one of the large cave systems nearby (that has a city built into it?), and fighting each other.

She's not interested in embroiling herself in a foreign war, especially with how little she knows about what is going on. She'll keep an eye on the Dragon's Pulse as she investigates the site of her arrival, trying to piece together clues.

There are some odd flows of energy running through the landscape, not geothermal or tectonic or anything she can easily recognize. Nothing like the secondhand reports of rifts in the world El conveyed to her from Bellona, though.

And then, amidst the subterranean fighting, someone familiar falls to the floor, heavily wounded.

- Lan Fan -

Ling is moving towards her before she even finishes processing it. 

An entrance to the cave is not too far away, fortunately. However, to get to ?Lan Fan?, she'll have to get through the battle lines which are composed of on one side giant spiders and on the other side giant undead humans.

She's fought her way across worse battlefields, and she'll fight her away across this one - though she simply vaults over or darts past most of it, only slowing to kill any who try to slow her down or get in her way. (She had her swords on her when she performed the experiment, and Greed is stirring again in her mind, which means it takes only a thought for her skin to turn to an impenetrable shield, for deadly spikes to grow from her body.)

The combatants are armed with bow and arrow or sword and spear, no firearms. The spiders spit webs to try to net her out of the air, but she can shift her configuration to make them slide off. Some few fighters on either side hang back and conjure bolts or bursts of elementally-aspected energy which are harder to dodge than conventional projectiles but mostly are just as ineffective. Except for the darkness ones. Those hurt, if she gets clipped, in a way that goes right to her core.

And ?Lan Fan?, when Ling gets in sight of her, is built to the same scale as the other humanoids, but with wings, blue skin, a nasty spear wound in her gut, and glows both in her Dragon Pulse senses and her regular vision.

(She puts more effort into dodging the dark bolts, and will actually bother to kill any firing those who seem especially persistent in trying to hit her. She doesn't get clipped more than once.)

She doesn't know what's going on, and she hates that, but that person - she feels like Lan Fan, in every way that counts. Probably not literally Lan Fan (hopefully not), but... The multiverse contains many strange things, and that person is close enough. 

Close enough that Ling sprints for the woman, scanning the area rapidly to identify potential threats before she gets absorbed in healing.

Potential threats include: everyone in the area, who are all very determined that Ling should not close to within melee range of their downed leader.

She can sense the threads of intent binding them to the woman, and through her to someone else - she focuses on disabling them, but isn't too cautious about not killing them, especially since the woman doesn't seem to be the one actively directing them. 

She'll get to her side, and kneel beside her, and carefully reach out to channel the strange energy of this world into stitching the woman back together. 

The energy of the world doesn't super want to do this! Ling will have to turn it inside out and a little bit sideways to get it in a configuration where it will aid her.

(She will also notice that the woman's native energy is also inside-out from the rest of the world in a similar fashion, and that her skin and blood are cold.)

(Honestly simpler than some of the contortions she's routinely doing via alkahestry. The natural energy of the world also does not want to spontaneously reassemble into a building, after all.)

The cold skin and blood - despite clear signs of life - are odd, but not any worse than bolts of energy or immortal soul-eating constructs.

She heals the woman as quickly and thoroughly as she knows how. (After the deaths during the Promised Day... She got very, very good at healing.)

Soon enough, she grunts and stirs to wakefulness.

"Wh... Who are you?"

"My name is Ling Yao."

"Who hurt you?"

Momentary confusion.

"The Nerubians."

The mind wrapped around hers - her old friend - stirs and looks out -

Greed loves Lan Fan too, even though she didn't know her as long. Loves her because Ling loves her, and because of her devotion and skill during the Promised Day. 

And Greed has been around the block more than a few times. 

'She's being controlled - see that disturbance in her chi? Your alkahestry can't do much about it.'

'Can you?'